dupee



(No Model.)

s .w E BM. PA uw DA` .nu` CN .m .JA R B Patented June 29,1897.

, JINI WT /Il/ fff 7 Ncnms Perm: roA novo-Uma, WASH Noou o c JOI-IN C. DUPEIL OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO RIPLEY J. WHITE, OF SAME PLACE.

i BRAZING APPMATUS.

SPECIFICATION forming part of Letters Patent No. 585,641, dated June 29, 1897.

Application filed April 20, l 8 9 6.

To all whom it nutty concern:

Be it known that I, JOHN C. DUPEE, a citizen of the United States, residing at Chicago, in the county of `Cook and State of Illinois, have invented certain new and useful Improvements in a Brazing Apparatus; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in that class of devices that are used for soldering, brazing, and other analogous purposes, and has for its object to provide an apparatus of this character that is durable in construction and efficient and economical in operation.

Figure l is a part elevation and part section of a device embodying my improved fea tures; Fig. 2, a sect-ion on line 2, Fig. l,look ing in the direction indicated by the arrow; and Fig. 3, a section on line 3, Fig. 1.

A represents a closed tank or reservoir for holding the usual gas-generating liquid fuel and ai r under pressure. The work parts comprised in the apparatus are connected to this tank, which is preferably of a cylindrical Y form and is so constructed as to safely stand any pressure practical working may require. The diameter of the tank is somewhat enlarged as it nears the lower end, the sidewall being corrugated, as at a, and the terminal lower edge ct t-urned inwardly and made to overlap the joining edge a2 of the conical bottom part A' and brought to a close bearing and then soldered from the outside, forming a perfectly tight and durable joint. The conical bottom extends inwardly and is provided with a series of corrugations as, which greatly adds to the strength and durability of the bottom structure. The apex of the conical bottom is provided with an opening in which is firmly secured a seat a4, having a fillingpassage e5 therethrough, in which is removably inserted a screw-plu g or stopple a6.

A packing-ring a7 is inserted between the seat a4 and the anged shoulder as on the screw-plug, closing the filling-passage, and forms a tight joint between the meeting surfaces, so that there is no possibility of the gasolene or other liquid escaping.

Serial No. 588,237. (No model.)

Vhen charging the tank with liquid, it is inverted and the closing-plug removed. The conical bottom forms a funnel and permits of the tank being rapidly filled from anykind of a rapidly-lowing open-mouthed vessel. Another advantage of the conical bottom is that by having the filling-opening in the apex of the cone the tank can only be Illed up to that point, thus leaving sufficient air-space for working purposes without guessing, as the air-space will be provided for between the apex and the lowest part of the bottom proper.

The feedpipe B, located on the interior of the tank, is formed in a series of coils b. The lower end of this pipe opens near the bottom, the upper end being inserted in a tubular plug B, fixed in the top of the tank. By forming the feed-pipe in a series of coils it will hold a larger volume of liquid and permit of the device being used in an inverted position for a longer time than if the feedpipe were straight, it being necessary some-v times to invert the device in order to bring the flame in contact with the surface being operated upon.

The lower end of a tubular connection C has a screw-threaded engagement with the plug B', as at h. The passage Win the connection C communicates with the passage b3 in the valve part C', which has a threaded engagement with the extension C, as at hl. The upper end of extension C terminates in the enlarged part D andprovides a mixing-chamber el. A number ofslots df `provide for the admission of air into l` amber d..

Dis the usual valve-rod, common in this class of devices, and is provided with the conical needle-pointed valve (Z2, extending into the removable valve-seat d3, which has a liquid-eonductin g passage therethrough communicating with the air-mixing chamber d, the feed being regulated by means of the valve in accordance withthe size of the dame required. The enlarged part D, inclosin g the mixing-chamber d, is contracted at thereceiving end and gradually increases in diameter to where it connects with the burnertube D2.

The mixing-chamber being of a variable diameter provides for a gradual expansion of IOO the generated gas and a more thorough homogeneous admixture with the incoming volume of air. The longitudinal slots admit the airsupply continuously from end to end, so that the union of the combustible elements is more perfect and produces a hotter iiame than if the Wall of the mixing-chamber were provided with round holes.

The pump attachment E for supplying air under pressure in the tank is of the same construction as set forth in my application, Serial No. 554,702, filed July 2, 1895. A detailed showing and description is therefore omitted.

This apparatus is much used in the open air and is provided with means for holding soldering-tools in position to be heated, as will be next described.

A ring F, Fig. 2, is removably mounted on the burner-tube D2, and is provided with prongs g g, between which the tool is supported.

g represents air-openings.

A bracket-ring Gis provided with a threaded stem h, which is inserted in the enlarged part D, Fig. 3, of the extension C. This ring is open on one side, as at h', for the convenient insertion and removal of the solderingtool. The projecting prong h2 also facilitates the insertion of the tool in the rest.

When the tool is moved forward far enough so that the soldering end will tip up the handle end, it comes in contact with the inside top of ring G and is held in that position, thus bringing the tool more directly into the ame and heating it somewhat quicker than when resting in the ordinary position shown in Fig. 1. This tool-supporting attachment dispenses with the services of one person and otherwise greatly facilitates the operation, as the tool is held steadily in the iiame.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a brazin g apparatus, the combination with a liquidfuel tank, of an air-pump connected therewith, a burner, and a coiled pipe, extending nearly to the bottom of said tank and conducting the liquid fuel therefrom to said burner, substantially as described.

2. In a brazing apparatus, the combination with the burnertube, of a ring, provided with prongs, g g, and mounted on said tube, the part, D, and a bracket-ring, open on one side and provided with a threaded stem, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN C. DUPEE.

'Vitnesses:

L. M. FREEMAN, L. B. CoUPLAND. 

